Burr removing device and method for cross deep oil hole with large ratio of length to diameter

Abstract

The invention discloses a burr removing device for a cross deep oil hole with the large ratio of the length to the diameter. The burr removing device comprises a clamp and abrasive material cylinders. The abrasive material cylinders comprise the upper abrasive material cylinder and the lower abrasive material cylinder which are opposite. The clamp is clamped between the upper abrasive material cylinder and the lower abrasive material cylinder. An oil injector body to be subjected to burr removing is mounted on the clamp. Under the effect of extrusion force, abrasive materials are extruded from the lower abrasive material cylinder to the upper abrasive material cylinder and then extruded from the upper abrasive material cylinder to the lower abrasive material cylinder and move back and forth for a certain times. The oil hole of the oil injector body is polished through the abrasive materials, and burrs are removed. The structure is simple, using is convenient, and the manufacturing cost is low; and especially the serial clamp with multiple types and special for the oil injector body is high in practicability and can clamp a plurality of workpieces at a time, so that the production efficiency is improved by a large margin, and the requirement of batch production is met.

Description

technical field [0001] The invention belongs to the technical field of deep oil hole processing technology, and relates to a deburring device and method for intersecting deep oil holes with a large aspect ratio. Background technique [0002] The fuel injector body of a diesel engine is mainly used to assemble pressure regulating springs, tappets, intermediate valves, needle valve couplers and injector nuts to form fuel injectors. The main function of the fuel injector is to atomize the high-pressure fuel supplied by the fuel injection pump into the needle valve coupling through the oil hole of the fuel injector body into fine oil droplets according to the characteristics of the mixture gas of the diesel engine, and spray it into the combustion chamber according to certain requirements. Therefore, the fuel injector is one of the key components affecting the performance index and reliability of the diesel engine. The oil hole structure design and precision of the fuel injecto...

AI Technical Summary

Problems solved by technology

[0006] (1) Manual operation is labor-intensive, and the grinding rod is easy to break

[0007] (2) It takes 10 minutes to process one product at a time, and the production efficiency is low, which cannot meet the requirements of mass production

[0008] (3) The grinding rod cannot penetrate the deep hole intersection, and the smooth transition of the deep hole intersection cannot be fully realized, and the failure rate is as high as 40%.

[0009] (4) Using a tool microscope to detect, it is impossible to judge whether the cross hole is smooth

[0010] (5) The cleanliness of the deep hole is poor. During the working process, it is impacted by high-pressure oil, and the existing burrs fall off, which seriously affects the performance and reliability of the diesel engine.

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